That is exactly what I did and then found myself being brought up on non-compliance with call handling standards at the end of the month due to a caller complaint. It was only then when my team leader “recalled” that there were indeed changes that week that I was not informed about. Due to the situation arising from command responsibility, I was not held liable for what happened and got off with a warning and a memo in my employee file.
The first thing I need to know in the case of a worker taking credit for the work of another is whether I am the supervisor in charge who can handle the issue. If I am then I can take action by investigating the validity of the complaint as filed by the aggrieved party. If enough evidence exists to prove that the complainant is the original owner of the work in question then proper credit must be given and the previous employee must be given the proper disciplinary action based upon the company blue book policy. The resulting disciplinary action could include anything from suspension to termination from duties and/or the filing of civil of criminal cases whenever